Deuce running hot and over charging?

[Blythewoodjoe]

I have noticed my truck doesn't perform the way my old truck does and this has me concerned for a long trip. Two things.

My old truck ran 180 degrees. My current truck runs and holds 200. Is that OK or should I look for a problem? Seems to be working well and doesn't go over 200. It may just be a gage issue. Any thought would be appreciated.

My charging gage is right at the edge of the green/red zone on the high side. I am going to get a volt meter and check the out put. I assume I should check it at the alternator. What is too high? I assume under 28 volts with the truck idling is OK or that too high? Again any thoughts?

Thanks guys,
Joe Trapp

 

[cranetruck]

How does your coolant look? My deuce has to work hard to get over 190°F and that's with radiator cover. Rarily over 200.
The voltage can be adjusted to 28 volts. The little white tick mark in the green field is the correct voltage, 28.5 +-0.5 volts.

 

[Blythewoodjoe]

My coolant looks OK but I will check it with a tester if I can find it. As for the alternator it's the HMMWV dual voltage alternator with the huge regulator on top. I will have to check the voltage when I get home.